Yeah, chickens are... chicken... You change something in their area and they freak out. Some chickens have even freaked out because the texture of their feed changed from crumbles to pellets...
I second the idea to toss some scratch or other treat in the leaves and chase them over there so that they discover them. Once one chicken goes in the leaves and isn't eaten and in fact starts eating yummy things, the others should follow.
I second the idea to toss some scratch or other treat in the leaves and chase them over there so that they discover them. Once one chicken goes in the leaves and isn't eaten and in fact starts eating yummy things, the others should follow.